Improvement in lamp-bubnees



J. ALLEN. Lamp-Burner.

Patented Aug. 2.5. 1868.

N,FE1'ERS. PHOTO-LIYNUGRAPMEI, WASHING JOHN ALLEN, OF NEW YORK,

Letters Patent No. 81,321, dated August 25, 1868; antedatecl August 12, 1868.

IMPROVEMENT IN LAMP-BURNERS.

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TO ALL WHOM IT MAY CONCERN:

.Be it known that I, JOHN ALLEN, M. D., ofthe city, county, and State of New York, have invented a new and useful Improvementfiu Wick-Burners for Lamps for producing light or heat;l and I do declare the following to be a full and eXactdesci-iption thereof, reference being had to the accompanyingvdrawings, and the letters of reference marked thereon.

i The nature of my invention consists in attaching to lamps and burners an adjustable draught-regulator, so made as to regxlate at pleasure the supply of air to the flame. Different grades of oil require different volumes of air for complete combustion; the air also varies in density, so that a larger volume is required to supply the same quantity of oxygen at one time than at another, or in one climate than in another. Therefpre, I construct a draught-regulator, with a view to supplying air to the amc or burner in the proportions required, whether to produce light or heat. Y 'g The burners in use are made without reference to these considerations. The air-passages 'are rigidly of the sa-me dimensions, whatever the grade of oil used, or whatever the climate or density of the atmosphere in which they are used. Thcsupply of air at times is deficient in volume and pressure, and at other times is l excessive, and the current, whether too large or too small, is rarely in the right direction. Instead of passing direct to the wick, the air passes to the apertures in the upper part of the cones. These apertures, when too small, conne the heated air within the cones, which do not-allowit to escape upward, and consequently it is in part conducted downwards into the lamp and oil, converting the latter into vaporyproducing smoke,charred wick', bad odors, and sometimes explosions. l

.To enable others skilled in the art to make and-use my invention, Iv will proceed to describe its construction and operation. i y

I do not confine myself to any particular form of construction, as my adjustable draught-regulator may be vconstructed in several ways, and still produce the desired result, which is to construct a regulator which will completely control the supply of air to the flame, both as to draught and volume.

In constructing my draught-regulator, I make it as a band or collar surrounding the wick-tube, and taper it Wider below than above, the chimney resting upon the top of the regulator, and the bottom resting upon the water-chamber or lamp beneath, and when the1draugbt needs to be increased, the regulator is unscrewed to vwiden the distance between the'water-chamber and regulator, andthe air rushes in as into a conical air-chamber,

and increases the draught and brilliaucy of the flame. I also add, if I deem necessary, damper-s to open and close around the side or in the bottom ofthe regulator.

Figure 1 represents the air-regulator A in its position.

Figure 2, Va. bottom view, showing the valves or dempers D in the bottom. V Figure 3, dempers DiD in the sides of the regulator. A represents the adjustable draught-regulator attached to the lower part ofthe burner, and B is an extension of the screw-tube of the burner by which the adjustable*draught-regulator is lmoved up or down. When .screwed `completely down, it brings the edge ofthe regulator tightly upon the water-chamber or lamp, and t'hus prevents all ingress of air, and, by turning the regulator up and down by'means of the screw, tho air-passages arc opened and closed, or the air-space in width isv completely regulated. The regulator is attached to this screw B and to the burner, and the screw-tube should project downwards about half an inch. A quarter-of-aninch movement ofthe screw is usually .found suilficient to control the ingress or egress of air to the burner, and produce perfect combustion, and C is the water-chamber or upper portion ot' the lamp upon which the adjustable draught-regulator is fixed by means of theextension-screw. B.

I do not claim valves or daulpcrs in the bottom or sides of the burner, but

What I do claim as my invention, and desire to secure by Letters Patent, is

The adjustable draught or air-regulator A, arranged, constructed, and operated ou the centreextension screw B, substantially as described and for the purpose set forth.

JOHN ALLEN.

Witnesses:

CHAS. SEARS, WM; C. GoULn. 

